Responses
http://www.mangago.zone/read-manga/houyou_jikken/
Maybe this one?
It is thank you so much!!!! ヾ(❀╹◡╹)ﾉ~
Trying to remember this yaoi, where the uke is sick, he seems to have some sort of illness, and the seme is his cousin?? and he tries to cure him...there is some sort of science club at their school...my memory is hazy lol